Degree of host-parasite compatibility between Schistosoma mansoni and their intermediate molluscan hosts in Brazil
Mem. Inst. Oswaldo Cruz
;
90(1): 5-10, Jan.-Feb. 1995.
Article
Dans Anglais
| LILACS
| ID: lil-319912
ABSTRACT
The compatibility of Biomphalaria tenagophila, B. straminea and B. glabrata from Minas Gerais with different strains of Schistosoma mansoni was evaluated using the method of Frandsen (1979b) in standardized experiments. One hundred and fifty of each species of snail were individually exposed in the laboratory to 50 miracidia of S. mansoni lines LE, SJ and AL. The cercariae from the infected snails were counted and used to calculate TCP/100 indices, which were compared with those of Frandsen (1979b). For B. tenagophila the TCP/100 indices varied from 37,996 to 74,266 (class II and III). The snail was poorly compatible with LE (class II) and compatible with SJ and AL (class III). For B. straminea the indices varied from 9,484 to 20,508. The snail was not very compatible with SJ (class I) and poorly compatible with LE and AL (class II). For B. glabrata the indices varied from 588,828 to 1,039,065. The snails was extremely compatible (class VI) with the three lines of S. mansoni. These results confirm the epidemiological importance of B. glabrata in Brazil followed by B. tenagophila and B. straminea.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Schistosoma mansoni
/
Biomphalaria
Limites du sujet:
Animaux
Pays comme sujet:
Amérique du Sud
/
Brésil
langue:
Anglais
Texte intégral:
Mem. Inst. Oswaldo Cruz
Thème du journal:
Médecine tropicale
/
Parasitologie
Année:
1995
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Centro de Pesquisas René Rachou-FIOCRUZ/BR
/
Universidade Federal de Minas Gerais/BR
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